<?php


if (!defined('IN_SEXMALL'))
{
	die('Hacking attempt');
}

class PHPZip
{
	function zip($dir, $zipfilename, $drop=false)
	{
		if (substr($dir, -1) != '/')
		{
			$dir = ($dir == '') ? './' : $dir . '/';
		}

		if (@function_exists('gzcompress'))
		{
			$curdir = getcwd();
			if (is_array($dir))
			{
				$filelist = $dir;
			}
			else
			{
				$filelist = $this -> get_filelist($dir);
			}

			if ((!empty($dir)) && (!is_array($dir))&&(file_exists($dir)))
			{
				chdir($dir);
			}
			else
			{
				chdir($curdir);
			}

			if (count($filelist) > 0)
			{
				foreach ($filelist AS $filename)
				{
					if (is_file($filename))
					{
						$fd = fopen ($filename, 'rb');
						$content = fread ($fd, filesize ($filename));
						fclose ($fd);

						if (is_array($dir))
						{
							$filename = basename($filename);
						}
						$this -> add_file($content, $filename);

						if ($drop)
						{
							@unlink($filename);
						}
					}
				}
				$out = $this -> file();

				chdir($curdir);
				$fp = fopen($zipfilename, 'wb');
				fwrite($fp, $out, strlen($out));
				fclose($fp);
			}

			return 1;
		}
		else
		{
			return 0;
		}
	}

	function get_filelist($dir)
	{
		$file = array();
		$dir = rtrim($dir,'/');
		if (file_exists($dir))
		{
			$args = func_get_args();
			$pref = isset($args[1]) ? $args[1] : '';

			$dh = opendir($dir);
			while (($files = readdir($dh)) !== false)
			{
				if (($files != '.') && ($files != '..'))
				{
					if (is_dir($dir .'/'. $files))
					{
						$file = array_merge($file, $this -> get_filelist($dir .'/'. $files, "$pref$files/"));
					}
					else
					{
						$file[] = $pref . $files;
					}
				}
			}
			closedir($dh);
		}

		return $file;
	}

	var $datasec      = array();
	var $ctrl_dir     = array();
	var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
	var $old_offset   = 0;

	/**
	 * Converts an Unix timestamp to a four byte DOS date and time format (date
	 * in high two bytes, time in low two bytes allowing magnitude comparison).
	 *
	 * @param  integer  the current Unix timestamp
	 *
	 * @return integer  the current date in a four byte DOS format
	 *
	 * @access private
	 */
	function unix2DosTime($unixtime = 0)
	{
		$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);

		if ($timearray['year'] < 1980) {
			$timearray['year']    = 1980;
			$timearray['mon']     = 1;
			$timearray['mday']    = 1;
			$timearray['hours']   = 0;
			$timearray['minutes'] = 0;
			$timearray['seconds'] = 0;
		} // end if

		return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
		($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
	} // end of the 'unix2DosTime()' method

	/**
	 * Adds "file" to archive
	 *
	 * @param  string   file contents
	 * @param  string   name of the file in the archive (may contains the path)
	 * @param  integer  the current timestamp
	 *
	 * @access public
	 */
	function add_file($data, $name, $time = 0)
	{
		$name     = str_replace('\\', '/', $name);

		$dtime    = dechex($this->unix2DosTime($time));
		$hexdtime = '\x' . $dtime[6] . $dtime[7]
		. '\x' . $dtime[4] . $dtime[5]
		. '\x' . $dtime[2] . $dtime[3]
		. '\x' . $dtime[0] . $dtime[1];
		eval('$hexdtime = "' . $hexdtime . '";');

		$fr = "\x50\x4b\x03\x04";
		$fr .= "\x14\x00";            // ver needed to extract
		$fr .= "\x00\x00";            // gen purpose bit flag
		$fr .= "\x08\x00";            // compression method
		$fr .= $hexdtime;             // last mod time and date

		// "local file header" segment
		$unc_len = strlen($data);
		$crc     = crc32($data);
		$zdata   = gzcompress($data);
		$c_len   = strlen($zdata);
		$zdata   = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
		$fr      .= pack('V', $crc);             // crc32
		$fr      .= pack('V', $c_len);           // compressed filesize
		$fr      .= pack('V', $unc_len);         // uncompressed filesize
		$fr      .= pack('v', strlen($name));    // length of filename
		$fr      .= pack('v', 0);                // extra field length
		$fr      .= $name;

		// "file data" segment
		$fr .= $zdata;

		// "data descriptor" segment (optional but necessary if archive is not
		// served as file)
		$fr .= pack('V', $crc);                 // crc32
		$fr .= pack('V', $c_len);               // compressed filesize
		$fr .= pack('V', $unc_len);             // uncompressed filesize

		// add this entry to array
		$this -> datasec[] = $fr;
		$new_offset        = strlen(implode('', $this->datasec));

		// now add to central directory record
		$cdrec = "\x50\x4b\x01\x02";
		$cdrec .= "\x00\x00";                // version made by
		$cdrec .= "\x14\x00";                // version needed to extract
		$cdrec .= "\x00\x00";                // gen purpose bit flag
		$cdrec .= "\x08\x00";                // compression method
		$cdrec .= $hexdtime;                 // last mod time & date
		$cdrec .= pack('V', $crc);           // crc32
		$cdrec .= pack('V', $c_len);         // compressed filesize
		$cdrec .= pack('V', $unc_len);       // uncompressed filesize
		$cdrec .= pack('v', strlen($name) ); // length of filename
		$cdrec .= pack('v', 0 );             // extra field length
		$cdrec .= pack('v', 0 );             // file comment length
		$cdrec .= pack('v', 0 );             // disk number start
		$cdrec .= pack('v', 0 );             // internal file attributes
		$cdrec .= pack('V', 32 );            // external file attributes - 'archive' bit set

		$cdrec .= pack('V', $this -> old_offset ); // relative offset of local header
		$this -> old_offset = $new_offset;

		$cdrec .= $name;

		// optional extra field, file comment goes here
		// save to central directory
		$this -> ctrl_dir[] = $cdrec;
	} // end of the 'add_file()' method

	/**
	 * Dumps out file
	 *
	 * @return  string  the zipped file
	 *
	 * @access public
	 */
	function file()
	{
		$data    = implode('', $this -> datasec);
		$ctrldir = implode('', $this -> ctrl_dir);

		return
		$data .
		$ctrldir .
		$this -> eof_ctrl_dir .
		pack('v', sizeof($this -> ctrl_dir)) .  // total # of entries "on this disk"
		pack('v', sizeof($this -> ctrl_dir)) .  // total # of entries overall
		pack('V', strlen($ctrldir)) .           // size of central dir
		pack('V', strlen($data)) .              // offset to start of central dir
            "\x00\x00";                             // .zip file comment length
	} // end of the 'file()' method
} // end of the 'PHPZip' class

?>